Here's a better rendering of the Halifax project:
Source
Looks like the plan is to stagger the floors a little. Each tower is quite slender -- I prefer that to the old plan for a fat tower.
The rendering is a little odd in that the scale of the other buildings isn't consistent at all. The taller building on the right should be almost twice as tall, for example.
There are also two other proposals next door, behind the new towers in the rendering above. They're only in the 16-20 storey range.